Re: [Freeswitch-users] send fax via google voice.I think it's more hard for a guy to hack your US pstn line if he lives in Australia... fax on internet can be hacked from everywhere... ----- Original Message ----- From: Ken Rice To: FreeSWITCH Users Help Sent: Sunday, March 06, 2011 11:55 AM Subject: Re: [Freeswitch-users] send fax via google voice. What security reasons? Its just as easy to tap a PSTN line as it is to sniff a network connection, the only difference is you might need a little bit different hardware... If it were about security, fax machines would actually encrypt a fax but they don't... On 3/6/11 1:55 AM, "envelopes envelopes" <sunwood360@gmail.com> wrote: that is not true. Real estator/law firm/accounting offices/travel agents...many of them still prefer fax for security reasons. I am always worried about sending my driver license pdf file via e-mail. On Sat, Mar 5, 2011 at 11:34 PM, curriegrad2004 <curriegrad2004@gmail.com> wrote: That's why PDF's/XPS/tiff's have replaced fax completely. Not many people out there still do have a fax machine :) On Sat, Mar 5, 2011 at 10:56 PM, Ken Rice <krice@freeswitch.org> wrote: > Ok > > will sending a fax over it work... The answer is yes it will work.. > will it work reliably, no > > Faxing just needs to die already... > The problem you have here with Faxing over G711 (PCMU or PCMA) is that > faxing uses a modem to encode a digital signal into an analog carrier meant > for a circuit switch voice network with a constant amount of delay and > guaranteed delivery of the entire analog stream > > VoIP by definition is Voice Over Internet Protocol... IP is a packet > switched network, where you can no guarantee a constant amount delay > (latency) ... Not to mention it is not common to see a udp packet or 2 > missing along the way. > > Where as 1 20ms packet may not seem like much to you, that's roughtly > equivalent to 575bytes of data in the fax and it will screw up the fax > either causing a corruption of the data, or a drop in the analog modem > carrier which requires a retrain... > > > > > On 3/5/11 11:35 PM, "envelopes envelopes" <sunwood360@gmail.com> wrote: > > ok, > > Reliability is a different issue. I am just wondering whether mod_dingaling > supports fax via GV. because someone proved sending fax via GV from fax > machine did work > .(http://www.magicjacksupport.com/faxing-via-google-voice-t7412.html). > > > > On Sat, Mar 5, 2011 at 9:18 PM, curriegrad2004 <curriegrad2004@gmail.com> > wrote: > > And relativity comes into play too. > > Also you do need to realize that the packets sent via UDP isn't > guaranteed to be in order as the fax machine expects the data to be > sent in order, not out of order. That's the beauty of packet switched > networks. > > On Sat, Mar 5, 2011 at 7:29 PM, Steve Underwood <steveu@coppice.org> wrote: >> On 03/06/2011 11:21 AM, envelopes envelopes wrote: >>> >>> Why is PCMU codec not reliable? >>> >>> >> Unsynchronised clocks, and packet loss. >> >> Steve >> >> >> _______________________________________________ >> FreeSWITCH-users mailing list >> FreeSWITCH-users@lists.freeswitch.org >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users >> http://www.freeswitch.org >> > > _______________________________________________ > FreeSWITCH-users mailing list > FreeSWITCH-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org > > > ________________________________ > _______________________________________________ > FreeSWITCH-users mailing list > FreeSWITCH-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org > > _______________________________________________ > FreeSWITCH-users mailing list > FreeSWITCH-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org > > _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org ---------------------------------------------------------------------------- _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org ------------------------------------------------------------------------------ _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org